Housing for electric heating elements



April 30, 1929. N. A. MORRO HOUSING FOR ELECTRIC HEATING ELEMENTS Filed Sept. 9, 1926 Z77 Fen/0f /V fl Morro ww w y Patented Apr. 30, 1929.

UNITED sT r s PATENT orries,

NORMAN ANDREW MORRO, or iUcxLAND, NEW ZEALAND. I

.YHOUSYING FOR ELECTRIC HEATING-ELEMENTS.

Application filed September 9,1926, Serial 134,521, and in New Zeal andllrebruai'y This invention relates touneans for housing electric clements, used for heatingwater A for domcstic uses and other purposes a'ndhas for'its' object the provision of an improved form 'of housing of a comparatively simple and inexpensive nature, whereby the elements 1 are enabled to be effectively protected and ma intained in ane tiicient state, and so that ac- I cess can be readily gainedtheretoas occasion requires. f

The housing provided by this invention comprises hollow members provided with inletsand outlets, for thecirculation of water thcrethrough, and dis'posedto grip and retain heating elements between their adjacent faces,

upon being clamped together.

The element gripping faces of the hollow members are preferably made Hat, and if desired they can be recessed to accommodate the elements, lugs and clamping bolts being provided to the hollow members to enable them to be caused to grip and retain the elements.

The hollow members are connected with water storage cisterns, so as to form part of a hot water circulating system.

The invention will be further described with the aid of the accompanying drawing wherein l igurc 1 is a perspcctiw: view of a com plete housing, and

Figure 2 is a sectional plan view thereof, while,

Figure 3 is an elevation of a housing adapt- :red for more than a single heating element, and

Figures 4, 5, 6 and 7, are diagrammatic views illustrating the disposition and connection ofthe hollow members, comprising the housing, in relation to and with water storage cistern forming part. of hot water circulatin; systems.

Referring to Figures 1 and 2 of the drawing, 1 represents hollow members between which a heating element 2 is gripped and retained, upon said members 1 being drawn or clamped together by means of bolts 3 passed through the lugs 4, and nuts 3 placed on said bolts.

Each hollow member 1 has a pair of water inlets 5, either of which can be used, as desired, the inlet 5 not in use being plugged. while an outlet 6 provides for the exit of heated water from each hollow member 1.

Preferably the faces 7 of the hollow members 1, between which the element 2 is gripped and retained, are made flat,anddffi r (F r to mom:

they can be recessed modate the elements. 3 A

Any desirednumber ofliollow members 1 canl be clamped together as above described, wit 1' tween each members 1. 1

The elements 2 used comprisestrips' of mica, wound with 'nieh'rome resistance r'ib bon, or any other 'suitable'form of known element can be employed. "A vulcanite or any material outlet insulating and heat resistin fitting 8 is detachablyfitteftb each pair of hollow members 1, wires 9 for conveying elec-' tric current to the elements 2 leading into said fitting S i A housing comprising a pair of hollow numbers 1 with a heating element gripped and retained between them can be connected with a water storage cistern 10 as in Figure 4, one of said hollow members 1, being nccted with the cistern by means of flow and return connections 12, 11 respectively, to and from the lower portion of the cistern, so as to heat the water in the lower portion thereof, while the other hollow member 1 is connected with the upper portion of the cistern by pipes 13 and 14, so as to heat the water in the upper portion of said cistern.

1V ith thearrangement just described the water in the top of the cistern 10 is enabled tobe heated quickly, to give a supply of hot and not merely warm water, shortly after putting the apparatus into use.

In the arrangement shown in Figure 5, each hollow member 1, is connected by pipes 15 and 16, with a separate cistern 10.

If desired one of the hollow members 1 can be connected with the and 18 (Figure 6) the other member 1 being enlarged and receiving water through the pipe 20 which does not pass to the cylinder 10, but is connected to the flow pipe 18 from the other hollow member 1 to the cistern 10.

lVith the arrangement shown in Figure 6, the water in the enlarged hollow member 1 although being heated is prevented from as- (tending through the pipe 20 until such time as it is boiling, with the result that a supply of very hot water, can be obtained'from the enlarged hollow member 1 through the cock 21 in a comparatively short space of time, owing to the smaller body of water to be heated.

an element 2 gripped and retained'lie pair of adjacent faces-7,- of said concistern 10 by pipes 17 In thearrangement shown in Figure 7, the two outer hollovmm emliers 1, are cpnnected by flow and return pipes 23, 22 with separate cisterns 10, while the intermediate hollow membet 1, is connected byflows and return-pipes 25, 24 with a further cistern and owing to it having a heating element fl, located at each side thereof, the water in said intermediate member 1 isquicklyhea'ted'to the required degree, .as compared y-ith the slower heating of the'waten'in ments 2, at one side only. Elements Zgri ed and. housed between "Qbe sjt rough which water circualLtimes effectively in proper working e bt ed and retained order.

rT elements being-located outside the cisterns to ,th ei-rbeing; simply gripped betweenfflgiefmemhers l, are enabled to be readily ot at for inspection and other purl5t' .11 W11at clairn and,desire to obtain by oiitr menlbers 1, having ele- Letters Patent of the United States of Americe is: r V 1 1 In electric \\-'ater-l'ieat-ing apparatus, counterpart, hollow water chambers closed on all sides and disposed in contact with each other at their relatively inner faces, means holding the chambers assembled, each chamber having a cold water inlet near its lower end and a hot water outlet near its upper end, the said inner facesoi the chambers having mating recesses completely closed to the atmosphere through the mutual contact of their said inner. faces at the marginal portions of said faces, an electrical resistance unit confined within the mating recesses in contact with the walls of saidi'eccsscs, and fittings at the lower ends of the chambers for the reception of the ends of electric conductors for supplying current to the. resistance unit.

In testimony whereof I have signed my nameto this specification.

NORMAN A. MORRO. 

